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  1. #21
    Join Date
    Oct 2009
    Location
    Cleveland, Ohio USA
    Posts
    1,384
    Country: United States

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    Double rollers pictures.
    Attached Thumbnails Attached Thumbnails IMG_20191226_134359838.jpg   IMG_20191226_134406817.jpg   IMG_20191226_134916220.jpg   IMG_20191226_135047847.jpg  

  2. #22
    Join Date
    Oct 2009
    Location
    Cleveland, Ohio USA
    Posts
    1,384
    Country: United States

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    Turns out there are several versions of the unit lock. Cleveland Key did not have the one I was thinking of, but did have two more versions. The darker one is very much like the original posted, but had 2 visible pins to allow disassembly. I will post that one first.
    Attached Thumbnails Attached Thumbnails IMG_20191226_131434314.jpg   IMG_20191226_131500126.jpg   IMG_20191226_130949250.jpg   IMG_20191226_131424931.jpg  

  3. #23
    Join Date
    Oct 2009
    Location
    Cleveland, Ohio USA
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    1,384
    Country: United States

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    Here is a another different one.
    Attached Thumbnails Attached Thumbnails IMG_20191226_130913126.jpg   IMG_20191226_125047347.jpg   IMG_20191226_125056698.jpg   IMG_20191226_130609523.jpg   IMG_20191226_125242139_BURST000_COVER.jpg  

    IMG_20191226_125316476.jpg  

  4. #24
    Join Date
    Oct 2010
    Location
    Tonawanda, NY, USA
    Posts
    877
    Country: United States

    Default

    Quote Originally Posted by Doug MacQueen View Post
    Double rollers pictures.
    Note:
    Limitations. Not all modern Corbin Russwin hardware supports the larger diameter master ring cylinders, so new master ring keying systems must drive the type of hardware used.
    Single shear line cylinders can be integrated into a master ring system, but the areas of their use within the structure of a keying system must be known at the inception of a system.
    It is seldom possible to integrate single shear line cylinders into a master ring system after the fact. Doing so normally creates key interchange and/or places limitations on system expansion.*

    I suspect that ASSA ABLOY will likely discontinue their venerable master ring system, which has been in use for 130 years; at some time in the future due to limited demand and complexity to manufacture. My 2 cents.

    *from Corbin Russwin Cylinder Manual by the late A.J. Hoffman and others

    Pete Schifferli

  5. #25
    Join Date
    Aug 2013
    Posts
    144
    Country: United States

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    Beautiful locks - Doug, those look like they are from the display case inside the front door?
    I have a bin full of different master ring cylinders - knob, mortise, and even one rim!
    Tell Bruce I said hello.

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